Feed-water heater and purifier



(No Model.) 2 Sheets-Sheet 1.

D. M. ROBINSON. FEED WATERHEATER AND PURIFIBR.

No. 537,363. Patentqd Apr. 9, 1895.

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(my Model.) 2 Sheets-Sheet 2.

1). M. ROBINSON. FEFD WATER HEATER AND PURIFIER.

No. 537,363. Patented A r, 9, 1895.

By W *6 ATTORNEYS.

NITED STATES it PATENT FFrcE.

DANIEL M. ROBINSON, OF BAY CITY, MICHIGAN.

FEED-WATER HEATER AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 537,363, dated April 9, 1895.

Application filed August 14, 1894. Serial No. 520,261. (No model.)

aZZ whom it may concern.-

Be it known that I, DANIEL M. ROBINSON, of Bay City, in the count-y'of Bay and State of Michigan, have invented a new and Improved Feed-Water Heater and Purifier, of which the following is a full, clear, and exact description.

My invention relates to improvements in feed water heaters and purifiers such as are used in connection with steam boilers, and the object of my invention is to produce a comparatively simple apparatus of this kind, which is connected to and forms a part of the boiler, which is arranged so as to utilize the waste heat from the boiler furnace for heating the feed water, which may be easily taken apart when necessary to clean it, which in no Wise interferes with the circulation of the boiler, and which is arranged in such a way that it cannot get out of order and that the water which passes through it will have a chance to precipitate its sediment and leave the water entering the boiler proper, pure.

To these ends, my invention consists in certain features of construction and combinations of parts, which will be hereinafter fully described and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal section of my improved feed water heater and purifier, and the boiler connected therewith. Fig. 2 is a sectional elevation on the line 2-2 of Fig. 1. Fig. 3 is a sectional plan on the line 33 of Fig. 1; and Fig. 4 is-a sectional plan on the line 4-4 of Fig. 1.

I have shown my improved feed water heater in connection with a combination coil and cylinder boiler, comprising the upper and lower cylinders and 11, the wall 12 inclosing them, the bank' 13 of coils engaging with the upper and lower cylinders, and the steam dome 14 on the upper cylinder. This construction is not shown or described in detail, as it forms no part of my invention, and the heater and purifier may be connected with other similar boilers.

The feed water heater and purifier is provided with a main outer shell or cylinder 15, which is arranged vertically and is provided at bottom and top with suitable heads 16 and 17, and it connects with the lower cylinder of the boiler by means of a water passage 18, and with the steam dome of the boiler by means of a pipe 19, which delivers into the top of the shell so that the same steam pressure is maintained in the shell as in the boiler. The water is therefore at the same level, while by taking the steam from the driest part of the purifier, none of the sprays are discharged into the equalizing pipe and carried into the steam dome, and saturating the steam which passes to the engine with Water, is thus prevented.

The cylinder is provided with outside pipes 20, which connect with the cylinder below the water line, and also with it at a point above the water line, at which point the pipes are covered by-a baffle plate or deflector 20, see Fig. 1, which is arranged inside the cylinder, and causes the water entering the cylinder from the pipes to be deflected and flow in a film down the Wall of the cylinder. This arrangement of the pipes 20 enables all the heat in the adjacent part of thefurnace or fine to be utilized for heating the water. The circulation between the upper and lower cylinders of the boiler is maintained through holes 21 and 22 in the cylinder wall, and in order that the circulation water shall not come in contact with the feed water, these holes are covered by a curved plate 23, which is bolted to the inner wall of the cylinder, as shown in Figs. 1 and 4.

W'ithin the outer shell or cylinder 15 is an inner cylinder 24, which rests on a suitable base 25, and the feed water enters this cylinder at the bottom through a pipe 26, which passes through a stuffing box 27 in the bottom of the cylinder, and the water rises through the ports 29 in the transverse partitions 28 of the cylinder 24, these ports being raised above the surface of the partitions, and they are placed alternately on opposite sides of the partitions, so that the feed water will have a zigzag course, will be thoroughly heated, and v thesediment will have a chance to settle upon the partitions so that the water will pass out of the cylinder top comparatively pure.

The cylinder 24 has a discharge opening 30 at the top, which is surrounded by a cup 31 in which rests the convex flanges 32 of the discharge pipe 33, which extends to a point near the top of the shell or cylinder 15, and

which is adjusted by means of set screws 33 extending through the edge of the pan 3t hereinafter mentioned and impinging on the inner side of the cylinder 15. The overflow from the pipe 33 passes into a pan 3t which surrounds the upperend of the discharge pipe, and the overflow from the pan drops into an annular cup or vessel 36 which is made on the top of the corrugated cylinder 37, and this prevents the splashing of the water which, when it overflows the cup, flows in a film down the corrugations 37 and is thoroughly heated. If the capacity of the feed water heater is to be increased, two or more of the corrugated cylinders 37 may be used and may be arranged concentrically.

The cylinder 37 is supported by means of lugs 38 on its inner side, and arms 39 projecting from the discharge pipe 33, on which arms the lugs rest. The water which flows down the corrugated cylinder is discharged into a vessel 40, from which it overflows into the shell 15 and passes through the opening 18 into the boiler proper. The water which flows down the cylinder 37 is subjected to the action of comparatively dry hot steam, so that the impurities which have escaped the settling cylinder 24 are hardened, and the water passes pure through the opening 18 into the boiler proper. The settling cylinder is preferably made in two parts, bolted together as shown in Fig. 4, so that it may be easily taken apart if necessary, and the impurities which settle in the outer shell or cylinder may be blown off through a pipe 41. If desired, the cylinder 24 may be made in several longitudinally separable parts to enable it to beeasily arranged when it is of a large size.

It will be seen that the above arrangement provides for a thorough purification of the feed water, and that by the time the water has reached the inlet port or opening 18 ot' the boiler, it will be as hot as the water in the boiler proper, while such heating is effected by means of the exhaust passing out through the furnace flue, the heat from which would otherwise be wasted.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination with a boiler, of an outer shell or cylinder connected therewith, a settling cylinder within the outer shell, the settling cylinder having a series of transverse partitions with ports therein, an inlet pipe entering the bottom of the settling cylinder, a discharge pipe opening from the top of the same into the upper part of the outer shell or cylinder, and a corrugated cylinder to receive the discharge from the pipe, substantially as specified.

2. The combination, with a boiler, of an outer shell or cylinder connected with the boiler so as to maintain a common water level with the boiler, an inner settling cylinder arranged within the outer shell and provided with a series of transverse partitions and ports therein, an inlet pipe delivering into the bottom of the settling cylinder, at discharge pipe leading from the top of the settling cylinder to the upper part of the outer shell or cylinder, an overflow pan at the top of the dis charge pipe, anda corrugated cylinder encircling the discharge pipe and receiving the overflow from the pan, substantially as described.

3. The combination, with a boiler, of an outer shell or cylinder connected with the boiler so as to maintain a common water level with it, a settling cylinder arranged within the outer shell and provided with a series of transverse partitions having raised ports therein, an inlet pipe delivering into the bottom of the settling cylinder, a discharge pipe opening from the top of the said cylinder, an overflow pan to receive the discharge from the pipe, a corrugated cylinder arranged within the outer shell to receive the discharge from the overflow pipe, and a vessel supported above the inner cylinder, to receive the discharge t'rom the corrugated cylinder, substantially as specified.

4:. The combination, with a boiler, of an outer shell or cylinder connected with the boiler so as to maintain a common water level, a feed-water heating and settling mechanism within the outer shell or cylinder, and pipes connecting the lower and upper portions of the outer shell, substantially as specified.

5. The combination, with a boiler, of an outer shell or cylinder connected with the boiler so as to maintain a common water level, feed water heating and settling mechanism within the outer shell, pipes arranged outside the shell and connecting the upper and lower parts thereof, and a baffle plate extending over the upper ends of the pipes and within the shell, substantially as specified.

6. The combination, with a boiler having upper and lower cylinders, the outer shell or cylinder connected with the boiler to maintain a common water level, and the feed-Water heating mechanism within the outer shell, of circulation ports connecting the upper and lower cylinders of the boiler with the shell, and a connection within the shell between the two ports of the boiler cylinder, substantially as shown and described.

7. The combination heater and purifier, the combination with the outer shell, the settling cylinder within it, and the inlet pipe delivering into the bottom of the settling cylinder, of a discharge pipe adj ustabl y connected with the top of the settling cylinder, outwardly projecting arms on the discharge pipe, a corrugated cylinder supported on the said arms, and means for delivering the overflow of the discharge pipe upon the corrugated cylinder, substantially as specified.

DANIEL M. ROBINSON.

Witnesses:

WILBUR N. BAILEY, S. C. ALLAN. 

